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0032-Python-Convert-DiscoverCommissionableNodes-to-asynci.patch
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From 47d800809a9979b3162f5f676f308ebd9282c361 Mon Sep 17 00:00:00 2001
From: Stefan Agner <stefan@agner.ch>
Date: Fri, 21 Jun 2024 14:28:03 +0200
Subject: [PATCH] [Python] Convert DiscoverCommissionableNodes to asyncio
(#34033)
* [Python] Convert DiscoverCommissionableNodes to asyncio
Make the discovery of commissionable nodes Python asyncio APIs as well.
This avoids blocking the event loop when using the API.
The implementation is also safe to be used with the Python asyncio
wait_for() function: The discovery process will be cancelled if the
timeout is reached.
* [Python] Adjust tests to use new DiscoverCommissionableNodes API
---
src/controller/python/chip/ChipDeviceCtrl.py | 54 +++++++++++--------
.../python/chip/commissioning/pase.py | 4 +-
src/controller/python/chip/yaml/runner.py | 2 +-
.../python/test/test_scripts/base.py | 6 +--
.../test/test_scripts/commissioning_test.py | 2 +-
.../test/test_scripts/failsafe_tests.py | 2 +-
.../test/test_scripts/mobile-device-test.py | 2 +-
src/python_testing/TC_IDM_1_2.py | 2 +-
src/python_testing/TC_OPCREDS_3_1.py | 2 +-
9 files changed, 42 insertions(+), 34 deletions(-)
diff --git a/src/controller/python/chip/ChipDeviceCtrl.py b/src/controller/python/chip/ChipDeviceCtrl.py
index 1c156c22d4..208385f305 100644
--- a/src/controller/python/chip/ChipDeviceCtrl.py
+++ b/src/controller/python/chip/ChipDeviceCtrl.py
@@ -37,7 +37,6 @@ import enum
import json
import logging
import threading
-import time
import typing
from ctypes import (CDLL, CFUNCTYPE, POINTER, byref, c_bool, c_char, c_char_p, c_int, c_int32, c_size_t, c_uint8, c_uint16,
c_uint32, c_uint64, c_void_p, create_string_buffer, pointer, py_object, resize, string_at)
@@ -634,8 +633,8 @@ class ChipDeviceControllerBase():
return (address.value.decode(), port.value) if error == 0 else None
- def DiscoverCommissionableNodes(self, filterType: discovery.FilterType = discovery.FilterType.NONE, filter: typing.Any = None,
- stopOnFirst: bool = False, timeoutSecond: int = 5) -> typing.Union[None, CommissionableNode, typing.List[CommissionableNode]]:
+ async def DiscoverCommissionableNodes(self, filterType: discovery.FilterType = discovery.FilterType.NONE, filter: typing.Any = None,
+ stopOnFirst: bool = False, timeoutSecond: int = 5) -> typing.Union[None, CommissionableNode, typing.List[CommissionableNode]]:
''' Discover commissionable nodes via DNS-SD with specified filters.
Supported filters are:
@@ -657,27 +656,36 @@ class ChipDeviceControllerBase():
if isinstance(filter, int):
filter = str(filter)
- self._ChipStack.Call(
- lambda: self._dmLib.pychip_DeviceController_DiscoverCommissionableNodes(
- self.devCtrl, int(filterType), str(filter).encode("utf-8"))).raise_on_error()
-
- if timeoutSecond != 0:
- if stopOnFirst:
- target = time.time() + timeoutSecond
- while time.time() < target:
- if self._ChipStack.Call(
- lambda: self._dmLib.pychip_DeviceController_HasDiscoveredCommissionableNode(self.devCtrl)):
- break
- time.sleep(0.1)
- else:
- time.sleep(timeoutSecond)
-
- self._ChipStack.Call(
- lambda: self._dmLib.pychip_DeviceController_StopCommissionableDiscovery(self.devCtrl)).raise_on_error()
+ # Discovery is also used during commissioning. Make sure this manual discovery
+ # and commissioning attempts do not interfere with each other.
+ async with self._commissioning_lock:
+ res = await self._ChipStack.CallAsync(
+ lambda: self._dmLib.pychip_DeviceController_DiscoverCommissionableNodes(
+ self.devCtrl, int(filterType), str(filter).encode("utf-8")))
+ res.raise_on_error()
- return self.GetDiscoveredDevices()
+ async def _wait_discovery():
+ while not await self._ChipStack.CallAsync(
+ lambda: self._dmLib.pychip_DeviceController_HasDiscoveredCommissionableNode(self.devCtrl)):
+ await asyncio.sleep(0.1)
+ return
- def GetDiscoveredDevices(self):
+ try:
+ if stopOnFirst:
+ await asyncio.wait_for(_wait_discovery(), timeoutSecond)
+ else:
+ await asyncio.sleep(timeoutSecond)
+ except TimeoutError:
+ # Expected timeout, do nothing
+ pass
+ finally:
+ res = await self._ChipStack.CallAsync(
+ lambda: self._dmLib.pychip_DeviceController_StopCommissionableDiscovery(self.devCtrl))
+ res.raise_on_error()
+
+ return await self.GetDiscoveredDevices()
+
+ async def GetDiscoveredDevices(self):
def GetDevices(devCtrl):
devices = []
@@ -691,7 +699,7 @@ class ChipDeviceControllerBase():
self._dmLib.pychip_DeviceController_IterateDiscoveredCommissionableNodes(devCtrl.devCtrl, HandleDevice)
return devices
- return self._ChipStack.Call(lambda: GetDevices(self))
+ return await self._ChipStack.CallAsync(lambda: GetDevices(self))
def GetIPForDiscoveredDevice(self, idx, addrStr, length):
self.CheckIsActive()
diff --git a/src/controller/python/chip/commissioning/pase.py b/src/controller/python/chip/commissioning/pase.py
index c0cfca5ee8..ee0b96c76b 100644
--- a/src/controller/python/chip/commissioning/pase.py
+++ b/src/controller/python/chip/commissioning/pase.py
@@ -48,8 +48,8 @@ async def establish_session(devCtrl: ChipDeviceCtrl.ChipDeviceControllerBase, pa
if isinstance(parameter, commissioning.PaseOverBLEParameters):
await devCtrl.EstablishPASESessionBLE(parameter.setup_pin, parameter.discriminator, parameter.temporary_nodeid)
elif isinstance(parameter, commissioning.PaseOverIPParameters):
- device = devCtrl.DiscoverCommissionableNodes(filterType=discovery.FilterType.LONG_DISCRIMINATOR,
- filter=parameter.long_discriminator, stopOnFirst=True)
+ device = await devCtrl.DiscoverCommissionableNodes(filterType=discovery.FilterType.LONG_DISCRIMINATOR,
+ filter=parameter.long_discriminator, stopOnFirst=True)
if not device:
raise ValueError("No commissionable device found")
selected_address = None
diff --git a/src/controller/python/chip/yaml/runner.py b/src/controller/python/chip/yaml/runner.py
index f0b681fb2b..ce1eaf84fc 100644
--- a/src/controller/python/chip/yaml/runner.py
+++ b/src/controller/python/chip/yaml/runner.py
@@ -712,7 +712,7 @@ class DiscoveryCommandAction(BaseAction):
self.filterType, self.filter = DiscoveryCommandAction._filter_for_step(test_step)
async def run_action(self, dev_ctrl: ChipDeviceController) -> _ActionResult:
- devices = dev_ctrl.DiscoverCommissionableNodes(
+ devices = await dev_ctrl.DiscoverCommissionableNodes(
filterType=self.filterType, filter=self.filter, stopOnFirst=True, timeoutSecond=5)
# Devices will be a list: [CommissionableNode(), ...]
diff --git a/src/controller/python/test/test_scripts/base.py b/src/controller/python/test/test_scripts/base.py
index 84a403643d..5e4def2760 100644
--- a/src/controller/python/test/test_scripts/base.py
+++ b/src/controller/python/test/test_scripts/base.py
@@ -210,10 +210,10 @@ class BaseTestHelper:
return None
return ctypes.string_at(addrStrStorage).decode("utf-8")
- def TestDiscovery(self, discriminator: int):
+ async def TestDiscovery(self, discriminator: int):
self.logger.info(
f"Discovering commissionable nodes with discriminator {discriminator}")
- res = self.devCtrl.DiscoverCommissionableNodes(
+ res = await self.devCtrl.DiscoverCommissionableNodes(
chip.discovery.FilterType.LONG_DISCRIMINATOR, discriminator, stopOnFirst=True, timeoutSecond=3)
if not res:
self.logger.info(
@@ -337,7 +337,7 @@ class BaseTestHelper:
async def TestOnNetworkCommissioning(self, discriminator: int, setuppin: int, nodeid: int, ip_override: str = None):
self.logger.info("Testing discovery")
- device = self.TestDiscovery(discriminator=discriminator)
+ device = await self.TestDiscovery(discriminator=discriminator)
if not device:
self.logger.info("Failed to discover any devices.")
return False
diff --git a/src/controller/python/test/test_scripts/commissioning_test.py b/src/controller/python/test/test_scripts/commissioning_test.py
index c53ab00f33..ac7954595b 100755
--- a/src/controller/python/test/test_scripts/commissioning_test.py
+++ b/src/controller/python/test/test_scripts/commissioning_test.py
@@ -125,7 +125,7 @@ async def main():
nodeid=112233, paaTrustStorePath=options.paaTrustStorePath, testCommissioner=True)
logger.info("Testing discovery")
- FailIfNot(test.TestDiscovery(discriminator=options.discriminator),
+ FailIfNot(await test.TestDiscovery(discriminator=options.discriminator),
"Failed to discover any devices.")
FailIfNot(test.SetNetworkCommissioningParameters(dataset=TEST_THREAD_NETWORK_DATASET_TLV),
diff --git a/src/controller/python/test/test_scripts/failsafe_tests.py b/src/controller/python/test/test_scripts/failsafe_tests.py
index d27111cbf7..9e4d4bb14e 100755
--- a/src/controller/python/test/test_scripts/failsafe_tests.py
+++ b/src/controller/python/test/test_scripts/failsafe_tests.py
@@ -88,7 +88,7 @@ async def main():
nodeid=112233, paaTrustStorePath=options.paaTrustStorePath, testCommissioner=False)
logger.info("Testing discovery")
- FailIfNot(test.TestDiscovery(discriminator=TEST_DISCRIMINATOR),
+ FailIfNot(await test.TestDiscovery(discriminator=TEST_DISCRIMINATOR),
"Failed to discover any devices.")
FailIfNot(test.SetNetworkCommissioningParameters(dataset=TEST_THREAD_NETWORK_DATASET_TLV),
diff --git a/src/controller/python/test/test_scripts/mobile-device-test.py b/src/controller/python/test/test_scripts/mobile-device-test.py
index 179dfa079a..27f8e98964 100755
--- a/src/controller/python/test/test_scripts/mobile-device-test.py
+++ b/src/controller/python/test/test_scripts/mobile-device-test.py
@@ -59,7 +59,7 @@ ALL_TESTS = ['network_commissioning', 'datamodel']
async def ethernet_commissioning(test: BaseTestHelper, discriminator: int, setup_pin: int, address_override: str, device_nodeid: int):
logger.info("Testing discovery")
- device = test.TestDiscovery(discriminator=discriminator)
+ device = await test.TestDiscovery(discriminator=discriminator)
FailIfNot(device, "Failed to discover any devices.")
address = device.addresses[0]
diff --git a/src/python_testing/TC_IDM_1_2.py b/src/python_testing/TC_IDM_1_2.py
index 18b727d962..dbf131e362 100644
--- a/src/python_testing/TC_IDM_1_2.py
+++ b/src/python_testing/TC_IDM_1_2.py
@@ -195,7 +195,7 @@ class TC_IDM_1_2(MatterBaseTest):
new_fabric_admin = new_certificate_authority.NewFabricAdmin(vendorId=0xFFF1, fabricId=self.matter_test_config.fabric_id + 1)
TH2 = new_fabric_admin.NewController(nodeId=112233)
- devices = TH2.DiscoverCommissionableNodes(
+ devices = await TH2.DiscoverCommissionableNodes(
filterType=Discovery.FilterType.LONG_DISCRIMINATOR, filter=discriminator, stopOnFirst=False)
# For some reason, the devices returned here aren't filtered, so filter ourselves
device = next(filter(lambda d: d.commissioningMode == 2 and d.longDiscriminator == discriminator, devices))
diff --git a/src/python_testing/TC_OPCREDS_3_1.py b/src/python_testing/TC_OPCREDS_3_1.py
index 32f3ec7b1f..86b6d109be 100644
--- a/src/python_testing/TC_OPCREDS_3_1.py
+++ b/src/python_testing/TC_OPCREDS_3_1.py
@@ -34,7 +34,7 @@ class TC_OPCREDS_3_1(MatterBaseTest):
if dev_ctrl is None:
dev_ctrl = self.default_controller
- devices = dev_ctrl.DiscoverCommissionableNodes(
+ devices = await dev_ctrl.DiscoverCommissionableNodes(
filterType=Discovery.FilterType.LONG_DISCRIMINATOR, filter=longDiscriminator, stopOnFirst=False)
# For some reason, the devices returned here aren't filtered, so filter ourselves
device = next(filter(lambda d: d.commissioningMode ==
--
2.45.2